1# This program is free software: you can redistribute it and/or modify 2# it under the terms of the GNU General Public License as published by 3# the Free Software Foundation, either version 3 of the License, or 4# (at your option) any later version. 5# 6# This program is distributed in the hope that it will be useful, 7# but WITHOUT ANY WARRANTY; without even the implied warranty of 8# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9# GNU General Public License for more details. 10# 11# You should have received a copy of the GNU General Public License 12# along with this program. If not, see <http://www.gnu.org/licenses/>. 13# 14# expansions involving patterns 15var='[hello' 16echo "${var//[/}" 17 18red='\[\e[0;31m\]' 19printf "%s\n" "${red//\\[\\e/}" 20 21foo="${red//\\[\\e/}" 22 23# foo == [0;31m\] 24printf "%s\n" "${foo//[0;31m\\/}" 25 26echo "${var//[]/}" 27echo "${red//[]/}" 28 29v=hello 30foo='[:alpha:]' 31 32echo ${v//[[:alpha:]]/} 33echo ${v//[[:alpha]]/} 34echo ${v//[[:alpha]/} 35